1. Convenient wireless connection: The Bluetooth 5.0 version provides a stable wireless connection, and can quickly transmit the audio of a mobile phone or tablet computer to the car audio to meet the music needs during driving. 2. Multi-function charging: Built-in Type-C and USB interfaces, maximum output 3.1A, support fast charging, can charge two devices at the same time, providing A more convenient charging experience. 3. High-quality audio: Supports audio playback in multiple formats such as MP3, making music better during driving. 4. Hands-free call: Answer the call, end the call, and reject the call. Just touch it, and you no longer have to be distracted by answering the call while driving. 5.FM transmitter: Integrated 87.5-108MHz FM transmitter, which can easily project audio signals from mobile phones, tablets or devices to the radio of the vehicle through FM wireless transmission, providing high-definition, interference-free audio experience. Specification: Shell material: ABS Input: 12-24V USB output: QC3.0 fast charge/5V-1A C port: supports PD fast charge 20W Output port type: USB, type-c, TF port Protocol: Bluetooth 5.0, A2DP built-in microphone, Bluetooth hands-free call Hardware functions: FM transmitter, Bluetooth, USB charging, USB disk reading, TF/color light, QC3.0+PD dual fast charge function. Package: 1*car charger